RE: If all 4 channels in a KAT5 unit are video......

[Tony Butler]

Hi Keith,

Thanks for the explaination.

I appreciate what you are saying about cost.
If the video/audioness of a source is determined by the RX/TX units
rather than anything in the switcher per-se, would it not be possible to
use one of your RGB units as source 1 and an SVideo/Audio unit as source
2 - that way all the video paths are the same length, so no funnies
there, and it means there is no need for the additional unit.

I know you're going to say 'that would mean you have less than 8
independent sources' but I'm thinking that your separate switching board
is probably not going to be released at the same time as the switcher,
so I might want to use this solution in the interim - provided the
switcher can handle all 4 signals as video that is.

I agree that sVideo is fine in most cases, and indeed would probably be
happy with that, except that not all sources support it.
Neither my Sky box nor my Tivo offer Svideo, so my choices are superior
RGB or inferior composite - or, the 3rd option being the most expensive,
RGB out of unit -> RGB-to-Svideo convertor -> KAT5 Svideo TX unit.

Adds too much to the cost :(
You need to do an RGB in ->sVideo + Audio balanced out :-)

I won't distract your from your PIC dev kit any more - except to say
your www.kat5.tv site seems to be dead at the moment - I can't get to it
at all....


Cheers,


Tony


> -----Original Message-----
> From: Keith Doxey [mailto:<a
href="/group/kat5-users/post?postID=NlRfGUfKGRkOCEdI-fIYx0ijYYMruzOU8ceP6qbMNQV6-vNoGuCDLsE8ORiIsGzfqSTE5xu5CWpeliO3QsiIPj5EfA">keith.doxey@b...</a>]
> Sent: 03 July 2002 20:49
> To: <a
href="/group/kat5-users/post?postID=mNmKj8pgQ1PNwlJogpTMtIBWaRUPDpK9QrLl9XNKpdS2U57eV0nxksOE8Ess4bIcqNoDtIKF-5UqCStFcMa78qnaXNWA">kat5-users@xxxxxxx</a>
> Subject: RE: [KAT5] If all 4 channels in a KAT5 unit are video......
>
> Hi Tony,
>
> Feeding 2 signals into one input and 2 into another is almost
guaranteed
> to
> give you wierd pictures as they would be travelling on 2 different
cables
> and would almost certainly be of differing lengths. That would mean 2
> colours arriving before or after the other colour and sync. It would
look
> like a badly printed magazine.
>
> Audio and Video require different components with the video grade
> components
> being considerably more expensive. Add to that the extra parts
required to
> make it switchable and the cost would leap dramatically.
>
> S-Video and Stereo is an acceptable compromise for most people but I
fully
> appreciate that some people will want to switch RGB and even VGA
sources.
> I
> am designing it so that a parallel switching board can be added to
handle
> RGBS. This would be controllable either independantly or linked with
an
> existing source.
>
> That gives the ability to route 8 signals to a room
> S-Video + Stereo over one cable
> RGBS for Video only over a second cable.
>
> For people with an AV room the S-Video + Stereo could feed the TV and
> Surround sound system with the RGB feed going to the projector etc.
>
> Got to go now.... received a new PIC Basic development system
yesterday to
> spped up the software development and need to learn how to use it.
>
>
> Keith
>
> www.diyha.co.uk
> www.kat5.tv
>
>
> -----Original Message-----
> From: Tony Butler [mailto:<a
href="/group/kat5-users/post?postID=5Pw-bpxLMgj8nGWd8pTlRdOgBFi3_Qms0oOxayKMoxjD2bJUkcHrz1feOfMYXUHORrm5bJoTWvt0nPDCQY_4hqY">lists@a...</a>]
> Sent: 02 July 2002 23:43
> To: <a
href="/group/kat5-users/post?postID=mNmKj8pgQ1PNwlJogpTMtIBWaRUPDpK9QrLl9XNKpdS2U57eV0nxksOE8Ess4bIcqNoDtIKF-5UqCStFcMa78qnaXNWA">kat5-users@xxxxxxx</a>
> Subject: [KAT5] If all 4 channels in a KAT5 unit are video......
>
>
> .....would that make them suitable for audio also?
> If not, would it be easy to make them switchable?
>
> I was thinking that 1 would like to be able to route RGB around the
> place and in the KAT5 Switched world, 1 and a half sources would give
me
> RGB + audio to 1 and a half output zones. Okay, so I've now reduced
the
> capacity of the switcher, but I have gained in terms of picture
> quality.....
>
> Recalling what keith said before about routing any of the 4 signal
paths
> anywhere, I guess maybe I can achieve this by say feeding R and G and
> the audio into source1, and the B and Sync into the video lines of
> source 2?
> (Thus keeping with the 2 video + 2 audio feeds the switcher can
> definitely do)
>
> The thing then would be to set up the switcher such that routing
source
> 1 to output 1 also routes source 2 to output 2.
>
> Plausible?
>
>
> Cheers,
>
>
> Tony
>
>
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